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P023 CAMERA ANATOMY
P023 CAMERA ANATOMY & OPERATION
Term | Definition |
---|---|
AI SERVO MODE | Pressing the shutter button halfway auto-focuses and CONTINUALLY re-focuses as the distance to subject changes |
APERTURE | An opening that changes in size to control the amount of light passing through the lens of the camera. |
APERTURE PRIORITY MODE | Shooting mode where the user manually sets the aperture and ISO, the camera selects the correct shutter speed for exposure, often used to control depth of field. |
AUTO FOCUS | Automatically focuses on the subject in the center of the viewfinder. Some cameras can focus on a user selected point or area. |
CCD SENSOR | (Charged coupled device) The sensor device used to capture light and convert it to a pixel based image inside a digital camera. |
CENTER WEIGHTED METER | Averages the exposure across the entire frame, but gives added emphasis (weight) to the central part of the image. |
CONTINUOUS SHOOTING MODE | Camera shoots pictures continuously if shutter release is held down. |
EXPOSURE COMPENSATION | Over-ride the automatic exposure settings where the camera's meter is incorrect such as backlighting. |
F-STOP | A fraction that measures of the size of the aperture opening on a camera. |
FOCAL PLANE | The point in a camera where light is focused by the lens, and is where the CCD or film is positioned. |
HISTOGRAM | A bar graph representing the pixels exposed in an image with 256 shades from black (left) to white (right) |
HOT SHOE | A mounting point on the top of some cameras to attach a more powerful external flash unit or other accessory |
ISO / SENSITIVITY | A system used to measure and adjust how sensitive a digital camera is to light. |
MANUAL MODE | The shooting mode in which the user has the greatest amount of control over all the camera settings |
ONE SHOT MODE | Pressing the shutter button halfway auto-focuses on the subject and locks until the shutter is released. |
RED EYE MODE | A pulse of light from a flash tube which forces a subject's pupils to contract, lessening the risk of redeye. |
SHUTTER | The device on a camera that opens and allows light to pass to the sensor or film for a set period of time in order make an exposure |
SHUTTER PRIORITY MODE | Shooting mode where the user manually sets the shutter speed and ISO, the camera selects the correct aperture for exposure, often used for moving subjects. |
SHUTTER SPEED | The amount of TIME that the shutter is open, as measured in seconds or fractions of a second |
SLR / DSLR | A type of camera where the viewfinder looks through the same lens that the camera uses to make exposures. |
SPOT METERING | Reading light levels from a very small area, typically 1-3% of an image area. |
VIEWFINDER | The part of a camera that the photographer looks through to compose and to focus the picture. |
WHITE BALANCE | A manual adjustment process of removing unrealistic color casts so objects that are white appear white in the image. |